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Leases (Future Minimum Lease Payments Under Non-Cancelable Operating Leases Net of Future Non-Cancelable Operating Sublease Payments) (Details)
$ in Millions
Feb. 03, 2018
USD ($)
Leases [Abstract]  
2018 $ 678
2019 637
2020 594
2021 554
2022 496
Thereafter 1,721
Total operating lease commitments $ 4,680